Tool holder



0. SEVERSON TOOL HOLDER Jan. 30, 1940.

Filed March 2, 1959 FMLZ FIG. 1

INVENTOR OLE. fiEVER SON I I 57 ATTORIY Patented Jan. 3:0, 194O I I i vUNITED I STATES PATENT OFFICE TOOL HOLDER Ole- Severson, Shelton, Count,assignor to The Apex Tool & Cutter Company, Inc., a corporation ofConnecticut Application March 2, 1939, Serial No. 259,368

1 Claim. (01. 29-99) It is among theprime objects of the present thetool holder head has a side support bearing invention to provide atoolholderwhich, through against the face of the tool head wherebyovercooperation with its tool head, will act to hold a hang is-minimized and an added rigidity of the tool bit with an improvedrigidity ensuring mini- 7 tool head to the holder union is provided.

mum vibration, or chatter, between the holder The tool holder of mypresent'invention fur- 5 and its supporting head. ther includes a rightangularlyextending sec- Another object is to provide a tool holder whichondary shank I9 adapted to. fit within the bottom .will have both asideand bottom support and recess I3. Associated with this bottom shank iiibearing against the tool head in addition to the is a bottonr'oif-setflange 2!! shown as a right 10 usual support and bearings of suchdevices. angle extension of the head Hi. This arrangelO' Another objectis'to provide a tool holder which ment not only permits the end of theshank it will minimize the over-hang of the tool with reto be secured byone of the screws I4 .but also spect to its toolhead. permits, the upperface of the flange 2!] to bear Other objects include the provision of atool against the bottom face of the head or posts holder which carriesout the foregoing advanso that a double and right angularly relatedbear- '15.

tages in a novel, simple device particularly de-fi ing for the toolholder is provided. signed to meet the demands of economic manu- In thatform of the invention, the structure facture. j holding the bit H in theholder bodyincludes a A further object o f the present invention is toholder platform (not shown) operated from a provide a device carryingfurther the principles draw-bolt i8. This construction being in acsetforth in my prior patent 2,031,334 by'procordance with my co-pendingapplication, Serial vicling double backing supports and bearings. No.737,701, I entitled Draw-bolt, tool holder and 7 Numerous other objectsand advantages of the bit, filed July 31, 1934'. However, it will bedisinvention will be apparent from a "consideration tinctly understoodthat this particular bit hold- "of the present invention taken inconnection with ing construction forms no part of the present theaccompanying drawing in which: invention. The invention relates to thedouble Figure 1 is a side elevation of one form of the I directionalofif-set' of the holder head with reinvention assembled with its toolhead. spect to the holder shank so that the head will Figure 2 is a planview of Figure 1. protrude beyond the shank to bear against the Figure 3is a perspective view of the holder and outer face of the tool head.Obviously any prcbit removedfromthe tool head. I ferred type of bitholding construction may be Referring to Figure 1 of the drawing, a.tool provided without departing from the spirit or head or post ofconventional form is illustrated, scope of the invention as outlined inthe pendincluding a shank l0 and tool head body I l, which ing claim.

is p vi wi l rly walled tool holder re- Having set forth the nature ofmy invention,

ceiving recesses l2 on either side and a bottom what I claim is: recess13. Locking Screws a e adapted to A tool holder comprising an elongatedrecsecure 'atool holder shank within the recesses. tangular shankadapted to be received within Thetool holder of the present inventioninatool post and having an integrally formed head 0 cludesathank l5adapted to fit withinthe re-' extending from the front face of the shankand 4,0

cesses I2 andto be secured therein by the screws being offset forwardlyand to one side with re-' 14. As distinct from the conventional holder,in sh said a k s as t tend y nd the which theflbit is secured in axiallyalignment with f f fa a 0ne S1de Wall Of Sald Shank, D the shank, thepresent holder has an ofi-set tool Vldmg Sald a Wlth a rear'wan Pa toand 5 holderhead' I6 which, by reference to Figures 2 opposltely facmgthe plane Sam from f and 3, will be seen to be off-set in two directionsthus to form a surface adapted to abut the from i face of a tool postwithin which said shank is gg z gs d ag fi 8 53:5 i a :2 secured, andhaving a similar supplemental shank I integrally formed with said firstmentioned shank the tool holder head will bear against the outer andextending right. angularly therefrom, and a 9 face of the tool head bodyThe cqmtructmn similar ofiset head carried by said supplemental is suchthat the shank and the tool holder head Shank providingpamnel to andoppositely f ci g are both substantially rectangular in shape, the theplane f a t po'st urface right angularly h ng stepped and juxtaposed w tsp related to the front surface and forming a surto the shank. Y faceadapted to abut said right angularly related 55 This arrangement permitsthe holder shank to surface. be wholly received within the recesses l2so that v OLE SEVERSON,

